Core for resilient wheel-tires.



G. E. GILMORE & F. V. RGESEL.

CORE FOR RSILIENT WHEEL TIRES. APPLICATION man 1AN.22, 1911.

1,227,422. Patent@ May 22, 1917.

UNITED sTATns PATnNa GEORGE E. GILMORE, OF CLEVELAND, AND FREDERCK V.ROESEL, OF AKRON, OHIO.

GORE FOR RESILIENT WHEEL-TBES To all whom t may concern:

Be it known that we, GEORGE E. Giiiiionn, a citizen of the United Statesof America, residing .at Cleveland, in the countyof` Cuyahoga and Stateof Ohio, and Fiinnnniox V. Ronsnii, a citizen of the United States ofAmerica, residing at Akron, in the county of Summit and State of Ohio,have invented a certain new and useful Improvement in Cores forResilient Vheel-Tires; and we do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make.and use the same.l

This invention relates to improvementsin cores for resilientwheel-tires, and pertains more especially to a tubular core whichembodies an improvement of the core disclosed and claimed in UnitedStates Letters Patent, No. 1,183,121, granted May 16, 1916, andtherefore comprises an elastic and compressible non-iniatable tubularbody which has a central chamber and is provided in each side thereofwith recesses.

The primary object of this invention is to render an elastic andcompressible and noninflatable tubular tire-core highly resilient andadequately strong and durable in every portion'thereof and adapted tosnugly I,lit the casing of a tire comprising said core. v

lith this object in view, and to attain any other object hereinafterappearing, this invention consists in certain peculiarities -in theconstruction and contour of the core in cross-section, hereinafterdescribed in this specification, pointed out in the claims, andillust-rated in the accompanying drawings.

In said drawings, Figure l is a cross-sectional view of a tire providedwith a core embodying our invention and shows the tire applied to atire-holder. Fig.2 is a longitudinal section of a portion of said core.Fig. 3 is a transverseisection on line 3 3, Fig. 2.

Referring to said drawings, A, Fig. 1, indicates the rim of a wheel andB indicates the hollow casing of a., tire. Said casing is substantiallythe sameas the casing of' an ordinary pneumatic tire and consequentlycomposed of flexible and elastic material, such, for instance, asrubber. Said casing extends therefore circun'iferentially of the rim Aand is provided interiorly with a chamber b extending" circumferentiallyof said rim. Within said chamber is our im- Specification of LettersPatent.

`the outer of said rows.

Eateiitedllay 22, 1917.

.Application filed January 22, 1917. Serial No. 143,63e.

proved flexible core which comprises an elastic and compressiblenon-inflatable tubular body D which extends circuinferentially of therim and is separately"illustrated in Figs. 2 and 3. rlflie body D iscomposed of elastic and conipi'essible material such, for instance, asrubber, and Z indicates the chamber formed centrally of said body andextending circumferentially of and arranged. concentrically relative tothe axis of the core. The walls of the chamber d are thick enough topositiyely prevent the core from collapsing in a tire applied to a.vehicle-rim, as shown in Fig. 1, by undue pressure on the tire.

The body D is provided in each side thereof with-two rows of laterallyextending subvstantially horizontally arranged recesses,

which rows are spaced radially of said side, and each recess extends tothe exteriorof the core, and 5 indicates the recesses of the inner ofsaid rows and ,6 indicates the recesses of Each recess 5 of the innerrow of recesses in each side of the core is substantially in lineendwise with a recess of the inner row of recesses in the other side ofthe core. Each recess 6 of the outer row of recesses in each side of thecore is sub stantially in line endwise with a recess in the outer row ofrecesses inthe other side of the core. The recesses of each row ofrecesses in each side of the core alternate with the recesses or theother row o recesses in said side of the core. Said recesses flaretoward the exterior of the core.

To facilitate the manufacture of the core and aiiord access to itschamber d for cleaning and repairs, the core is provided the inner halfor portion of its body D witha slot 7 which is arrangedbetween the innerrows of recesses and extends from said cham ber to the exterior of thecore. The slot 7 is Y engaged by an iinperorate strip 8 of elastic andcoinpressible material such, for instance, as rubber. The strip 8 holdsapart and braces the side walls of the slot 7 and constitutes means ttorholding the slotted portion of the core tightly against the'casing Bcontaining the core. The slot '7 'is enlarged laterally, as at 10, atthe exteriorof the core,

in opposite directions, and the strip 8 has Y flanges 12 which engagethe enlargements 10 of the slot so as to prevent displacement of saidstrip inte the chamber d. i

To give thecore a high degree of resiliency at the inner portion of theslot 7 each recess of. the inner row of recesses in each j tei-ferencewith adequate side of the core has its inner end arranged, as at 13,nearer the exterior of the core than 4the inner edge of said slot, butrsaid recesses are spaced from said slot so as to avoid instrength ofthe core at the sides of the slot.

To render the core more especially highly resilient at each side of thechamber d the outer half offthe core, more especially circumferentiallyof the chamber d, the inner end 4of each outer recess 6 is arranged, asat 1.6, nearer the outer circumference of the coro than the chamber d.To render the core strong and durable enough circumferentially of thechamber d the body of the core has an imperforate ortion extendingcircumferentially of sai chamber and, as at 17, between the inner end`of eachl outer recess 6 in one side ofthe core and the opposite outerrecess in the other side of the core, and said imperforate portion ofsaid body forms end walls for portions of said recesses and is arrangeddiametrically opposite the slot 7 in the inner half ofthe-core.

A tire-core havin the peculiarities hereinbefore described ishighlyresilient and adequately strong and durable in every portion thereof.

What we claim is 1. A flexible yand resilient tire-core comprising anelastic and compressible non-iniatable body having a central chamber andprovided in each side thereof with an outer row and an inner row oflaterally extending recesses arranged substantially horizontally betweensaid chamber and the exterior of the core, the outer end-portion of4each recess of the inner row of recesses in each side of the coreextending into the-outer half of the core, and the outer end-portion ofeach recess of the outer row of recesses in each side of the coreextending into the inner half of the core.

2. A flexible and resilient tire-core comprising an elastic andcompressible non-inflatable body having a central chamber and providedin each side thereof with an outer row and an inner row of laterallyextending recesses arranged substantially horizontally between saidchamber and the exterior o f the core, each recess in each side of thecore being arranged in line endwise witha recess in the opposite side ofthe core, the inner ends of the recesses of the outer row of re'- oessesin each side of the core being urranged nearer the outer circumferenceof the core than the aforesaid chamber, and the body of the core havingan imperforate portion which is arranged between the inner end of eachouter recess in one side of the core and the opposite outer recess inthe other side of the core and which forms end walls for portions ofsaid recesses.

3.*A flexible and resilient tire-core comprising an elastic andcompressible non-inflatable body having a central chamber and providedin each side thereof with an outer row and an inner row of laterallyextending recesses arranged substantially horizontally between saidchamber and the exterior of the core, the recesses of the outer row ofrecesses in each side of the core extending at their outer ends into theinner half of. the core and having their inner ends arranged nearer 'theouter circumference of the core than the aforesaid chamber.

4. A flexible and resilient tire-core com-l prising an elastic andcompressible non-ini atable body having a central chamber and providedin each side thereof with an outer row and an inner row of laterallyextending recesses arranged substantially horizontally between saidchamber and the exterior of the core, said body having an imperiorateportion extending circumferentially of said chamber between the outerrows of recesses and being provided with a slot which is arrangeddiametrically opposite said imperferate portion and extends along theaforesaid chamber and from said chamber to the exterior of the core,said slot being adapted to receive means for holding apart and bracingthe side walls of said slot.

5. A flexible and resilient tire-core comprising an elastic andcompressible non-inliatable body having a central chamber and providedin each side thereof with an outer row and an inner row of laterallyextending recesses arranged substantially horizontally between saidchamber and the exterior of the core, the inner ends of the recesses ofthe outer row of recesses in cach side of the core being arranged nearerthe outer circumference of the core than the aforesaid chamber, theaforesaid body havingan imperforate portion which extendscircumferentially of side walls of the slot, and the inner ends oi v therecesses of the inner row of recesses in each side of the core beingarranged nearer the exterior of the core than the inner edge -of-'saidslot.

. flexible and resilient tire-core comprising an elastic andcompressible non-inmames Hate-ble body having a central chamber andprovided in each side thereo Yb, an outer ron7 and an inner row oflaterally extending recesses arranged substantially horizontally betweensaid chamber and the exterior of the core, said body having aniinperforate por-v tion extending oiroonii'erentially of said Chamberbetween the outer rows of recesses and being provided with a slot whichis arranged diametrically opposite said imperfe-v rate portion andextends along the aforesaid chamber and from said chamber to the eX-terior of the core and which has a lateral enlargement at the exterioror' the core, and

. an elastic and compressible strip engaging said slot and flanged intosaid enlargement of the slot.

7. A iiexible and resilient tire-core comprsing an elastic andoompressible non-inlatable body having a central chamber and provided ineach side thereof with an outer row and an inner row of laterallyextending recesses arranged substantially horizontally between saidchamber and the exterior of the core, the core being provided. in thein# ner half of its body Wit-l1 a slot which is arranged betibveen theinner rows of recesses end extends from said chamber to the exterior ofthe core and along said chamber, and an elastic and oompressible stripengaging said slot, each recess of the'inner row of recesses in eachside of the core having its inner end arranged nearer the exterior ofthe core than the inner edge of said slot, and the last-mentionedrecesses being spaced from said slot.

In testimony whereof, We sign the foregoing specification, in thepresence of two Witnesses.

GEORGE E. GILMRE. A FREDERICK V, ROESEL. Witnesses:

CASPER J. DORER,

B. C. BROWN.

